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Optimal spacing of parallel boards with discrete heat sources cooled by laminar forced convection

Publication ,  Journal Article
Morega, M; Bejan, A
Published in: Numerical Heat Transfer; Part A: Applications
January 1, 1994

This paper shows numerically how to select the optimal spacing between boards mounted in a stack of specified volume, so that the overall thermai conductance between the stack and the forced coolant is maximum. Several configurations are considered: boards with uniform flux, flush-mounted discrete sources, and protruding heat sources. The flow is laminar and the pressure difference across the stack is fixed (Δp). It is shown that for all the board geometries and thermal boundary conditions studied, the optimal board-to- board spacing is correlated by (Dopt/l) ~2.7(Δpl2/µα)-1/4, where I is the effective longitudinal (flow) distance occupied by the discrete sources and the unheated patches contained between them, and µ and α are the viscosity and thermal diffitsivity of the fluid. If U∞ is the free-stream velocity upstream of the stack, the optimal spacing is given by (Dopt /I) ~ 3.2P)-1/4 (U∞l/v)-1/2. © 1994 Taylor and Francis Group, LLC.

Duke Scholars

Published In

Numerical Heat Transfer; Part A: Applications

DOI

EISSN

1521-0634

ISSN

1040-7782

Publication Date

January 1, 1994

Volume

25

Issue

4

Start / End Page

373 / 392

Related Subject Headings

  • Mechanical Engineering & Transports
  • 4901 Applied mathematics
  • 4012 Fluid mechanics and thermal engineering
  • 0913 Mechanical Engineering
  • 0905 Civil Engineering
  • 0102 Applied Mathematics
 

Citation

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Morega, M., & Bejan, A. (1994). Optimal spacing of parallel boards with discrete heat sources cooled by laminar forced convection. Numerical Heat Transfer; Part A: Applications, 25(4), 373–392. https://doi.org/10.1080/10407789408955955
Morega, M., and A. Bejan. “Optimal spacing of parallel boards with discrete heat sources cooled by laminar forced convection.” Numerical Heat Transfer; Part A: Applications 25, no. 4 (January 1, 1994): 373–92. https://doi.org/10.1080/10407789408955955.
Morega M, Bejan A. Optimal spacing of parallel boards with discrete heat sources cooled by laminar forced convection. Numerical Heat Transfer; Part A: Applications. 1994 Jan 1;25(4):373–92.
Morega, M., and A. Bejan. “Optimal spacing of parallel boards with discrete heat sources cooled by laminar forced convection.” Numerical Heat Transfer; Part A: Applications, vol. 25, no. 4, Jan. 1994, pp. 373–92. Scopus, doi:10.1080/10407789408955955.
Morega M, Bejan A. Optimal spacing of parallel boards with discrete heat sources cooled by laminar forced convection. Numerical Heat Transfer; Part A: Applications. 1994 Jan 1;25(4):373–392.

Published In

Numerical Heat Transfer; Part A: Applications

DOI

EISSN

1521-0634

ISSN

1040-7782

Publication Date

January 1, 1994

Volume

25

Issue

4

Start / End Page

373 / 392

Related Subject Headings

  • Mechanical Engineering & Transports
  • 4901 Applied mathematics
  • 4012 Fluid mechanics and thermal engineering
  • 0913 Mechanical Engineering
  • 0905 Civil Engineering
  • 0102 Applied Mathematics